1 input file to 'n' output file with some condition

[Rajrathinam]

1. I have situation where the input file has date field on specific position.
2. Input file contain 100 records but unique 10 dates.
3. For ex - each date has 10 records on it.
4. There should be 10 Output file ie each date should have one file and all records related to that date should be into that file.
5. Finally 10 output file with 10 records on each.
6. Note: Do not know what date are there in input file.

[William Collins]

Which SORT product do you use? Can you show sample representative input, and expected output? RECFM and LRECL?